IWR6843ISK: High Accuracy Lab - Plots do not match

Hi Paulina,

I've asked an expert to look into this and we should have an answer for you sometime next week.

Cheers,

Akash

Hi Paulina,

Do you observe this at different critical distances? Much less than .5 meters or greater than 2 meters?

Cheers,

Akash

Hi Akash, 
I tested it for the distances you mentioned: for 2+ meters the difference gets even worse and under 50cm the difference is smaller. The value from the range plot is always the one closer to reality. When using the demo for a range between 20cm and 1.3m I compensate 10 cm range bias, so that is a known issue that I already account for. But in the Demo the detected objects from the range and x-y plot line up.  

Right now I don't have any pictures, however I could provide you with some. But firstly, I tried the 64xx version and looking at the range profile I fear that there is definitely something wrong independent of my test setup. I don't know if that is of any relevance but I am operating the sensor (ES 2 version) in debug mode. But as mentioned before I'm getting matching plots for the demo version. Is there any more information I could give you that might be helpful to you?

Hi Paulina,

The 64xx uses a Different Visualizer than the 68xx version, would you be able to try with this visualizer?

Cheers,

Akash

Hi Akash,
sorry I didn't read the user guide thoroughly enough. But with the correct visualizer the values are very similar to the ones I posted first. Additionally, I get similar results for less than 50 cm and more than 2m with the 64xx version. I'm recording this in an office environment. Can you make an assesment already if this might be a hardware or software problem?  

Hi Paulina,

I believe this to be a software issue, I will need a few days this week to look into it. I will try to have a remedy for you on either Thursday or Friday.

Cheers,

Akash

Hi Akash,

perfect. Thanks a lot!

Greetings,

Paulina

Hi Akash,

although this has probably nothing to to with my issue I noticed that in more recent versions (e.g.1.1.4) of the high accuracy lab there is a factor of 0.64 added to the range. Is there a reason for that?

And secondly, from the c-Code I would have thought  the y and z- coordinates from the visualizer to be zero.

But actually they both are 0.025. Does that have something to do with a quantisation or where does that stem from?

Thanks again and looking forward to your response.
Best wishes and a nice weekend.

Hi Akash,

unfortunately I cannot open the new 68xx version. I'm getting a 'Sorry! We couldn't find your page.' error. It is not in the gallery either, so I'm assuming something went wrong, when uploading it. Maybe you could update me again.
But it did solve the issue for the 64xx version! 
Would you mind, explaining what the issue was? I'd be really interested.

Best wishes and thanks a lot!
Paulina